Defensive publication



DEFENS P ICATIN UNITED STATES PATENT OFFICE Published at the request ofthe applicant or owner in accordance with the Notice of Dec 16, 1969,869 0.G. 687. The abstracts of Defensive Publication applications areidentified by distinctly numbered series and are arrangedchronologically. The heading of each abstract indicates the number ofpages of specification, including claims and sheets of drawingscontained in the application as originally filed. The files of theseapplications are available to the public for inspection and reproductionmay be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to themerits of alleged invention. The Patent Oflice makes no assertion as tothe novelty of the disclosed subject matter.

PUBLISHED JUNE 9, 1970 T875,011 POLYESTERS 0F 2,6-NAPHTHALENDI-CARBOXYLIC ACID John R. Caldwell and Russell Gilkey, both of R0. Box511, Kingsport, Tenn. 37662 Continuation of application Ser. No.704,991, Feb. 13, 1968. This application Dec. 8, 1969, Ser. No. 880,466Int. Cl. (308g 17/08 US. Cl. 260-75 N0 Drawing. 14 Pages SpecificationHighly polymeric, linear polyesters having improved hardness,solubility, and crystallization tendencies and which are useful asfilms, fibers, and molded objects are prepared from2,6-naphthalenedicarboxylic acid and 2,2- dialkyl-1,3-propanediols (suchas neopentyl glycol).

